{"id":86632,"date":"2025-06-01T04:17:27","date_gmt":"2025-06-01T04:17:27","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86632"},"modified":"2025-06-01T04:17:27","modified_gmt":"2025-06-01T04:17:27","slug":"the-salt-in-sea-water-comes-from","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/","title":{"rendered":"The salt in sea water comes from:"},"content":{"rendered":"

The salt in sea water comes from:<\/p>\n

[amp_mcq option1=”rain.” option2=”chemical exchange between sea water and its substratum as well as hydrothermal emissions.” option3=”evaporation of water and concentration of dissolved salts.” option4=”mixing of different density waters during natural warm and cold current movements.” correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC Geoscientist – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe salt in sea water primarily originates from the weathering and erosion of rocks on land, with rivers carrying dissolved minerals and salts to the ocean. Additionally, significant contributions come from chemical reactions between seawater and the ocean floor (rock-water interactions) and from hydrothermal emissions at mid-ocean ridges and other volcanic activity, which release dissolved minerals into the water.
\n<\/section>\n
\nThe salinity of the ocean is a result of geological processes involving the dissolution of minerals from rocks on land and the seabed, transported by rivers and released through volcanic and hydrothermal activity.
\n<\/section>\n
\nWhile evaporation concentrates the existing salts, it is not the *source* of the salts themselves. Rain contains very little dissolved salt. Mixing of water masses influences temperature and currents but doesn’t create the salts. Therefore, chemical exchange with the substratum and hydrothermal vents are key processes, alongside riverine input, that contribute to the ocean’s salt content.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The salt in sea water comes from: [amp_mcq option1=”rain.” option2=”chemical exchange between sea water and its substratum as well as hydrothermal emissions.” option3=”evaporation of water and concentration of dissolved salts.” option4=”mixing of different density waters during natural warm and cold current movements.” correct=”option2″] This question was previously asked in UPSC Geoscientist – 2020 Download PDFAttempt … <\/p>\n

Detailed SolutionThe salt in sea water comes from:<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1091],"tags":[1288,1337,1106],"class_list":["post-86632","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1288","tag-salinity-of-the-ocean","tag-world-and-physical-geography","no-featured-image-padding"],"yoast_head":"\nThe salt in sea water comes from:<\/title>\n<meta name=\"description\" content=\"The salt in sea water primarily originates from the weathering and erosion of rocks on land, with rivers carrying dissolved minerals and salts to the ocean. Additionally, significant contributions come from chemical reactions between seawater and the ocean floor (rock-water interactions) and from hydrothermal emissions at mid-ocean ridges and other volcanic activity, which release dissolved minerals into the water. The salinity of the ocean is a result of geological processes involving the dissolution of minerals from rocks on land and the seabed, transported by rivers and released through volcanic and hydrothermal activity.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The salt in sea water comes from:\" \/>\n<meta property=\"og:description\" content=\"The salt in sea water primarily originates from the weathering and erosion of rocks on land, with rivers carrying dissolved minerals and salts to the ocean. Additionally, significant contributions come from chemical reactions between seawater and the ocean floor (rock-water interactions) and from hydrothermal emissions at mid-ocean ridges and other volcanic activity, which release dissolved minerals into the water. The salinity of the ocean is a result of geological processes involving the dissolution of minerals from rocks on land and the seabed, transported by rivers and released through volcanic and hydrothermal activity.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T04:17:27+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"The salt in sea water comes from:","description":"The salt in sea water primarily originates from the weathering and erosion of rocks on land, with rivers carrying dissolved minerals and salts to the ocean. Additionally, significant contributions come from chemical reactions between seawater and the ocean floor (rock-water interactions) and from hydrothermal emissions at mid-ocean ridges and other volcanic activity, which release dissolved minerals into the water. The salinity of the ocean is a result of geological processes involving the dissolution of minerals from rocks on land and the seabed, transported by rivers and released through volcanic and hydrothermal activity.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/","og_locale":"en_US","og_type":"article","og_title":"The salt in sea water comes from:","og_description":"The salt in sea water primarily originates from the weathering and erosion of rocks on land, with rivers carrying dissolved minerals and salts to the ocean. Additionally, significant contributions come from chemical reactions between seawater and the ocean floor (rock-water interactions) and from hydrothermal emissions at mid-ocean ridges and other volcanic activity, which release dissolved minerals into the water. The salinity of the ocean is a result of geological processes involving the dissolution of minerals from rocks on land and the seabed, transported by rivers and released through volcanic and hydrothermal activity.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T04:17:27+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/","name":"The salt in sea water comes from:","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T04:17:27+00:00","dateModified":"2025-06-01T04:17:27+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The salt in sea water primarily originates from the weathering and erosion of rocks on land, with rivers carrying dissolved minerals and salts to the ocean. Additionally, significant contributions come from chemical reactions between seawater and the ocean floor (rock-water interactions) and from hydrothermal emissions at mid-ocean ridges and other volcanic activity, which release dissolved minerals into the water. The salinity of the ocean is a result of geological processes involving the dissolution of minerals from rocks on land and the seabed, transported by rivers and released through volcanic and hydrothermal activity.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-salt-in-sea-water-comes-from\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC Geoscientist","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-geoscientist\/"},{"@type":"ListItem","position":3,"name":"The salt in sea water comes from:"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/86632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=86632"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/86632\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=86632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=86632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=86632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}